Free-floating planets are recently drawing a special interest among the scientific community. Gravitational microlensing is up to now the exclusive method for the study of this Galactic population. In this work we find that the future Euclid space-based observatory can discover a substantial number of microlensing events in its field of view, caused by free-floating planets. Making use of a synthetic population, we investigate also the importance of using the parallax effect as an additional source of information. We conclude about the best positions of the Earth in its orbit for obtaining the greatest number of events with parallax traces.
Parallax effects on microlensing events caused by free-floating planets
DE PAOLIS, Francesco;NUCITA, Achille
2013-01-01
Abstract
Free-floating planets are recently drawing a special interest among the scientific community. Gravitational microlensing is up to now the exclusive method for the study of this Galactic population. In this work we find that the future Euclid space-based observatory can discover a substantial number of microlensing events in its field of view, caused by free-floating planets. Making use of a synthetic population, we investigate also the importance of using the parallax effect as an additional source of information. We conclude about the best positions of the Earth in its orbit for obtaining the greatest number of events with parallax traces.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
